code: def _NSApp():
      """Return the global NSApplication instance (NSApp)"""
      objc.objc_msgSend.argtypes = [void_p, void_p]
      return msg(C("NSApplication"), n("sharedApplication"))
  
file_path: catboost/contrib/python/ipython/py3/IPython/terminal/pt_inputhooks/osx.py
imports: import ctypes
  import ctypes.util
  from threading import Event
label_desc: Use image node_id 4 for calling a global function with example usage: _NSApp() and returns: msg